Abstract

The article presents the results of using VIR’s and RPRC’s 18 backcross hybrids as donors of a complex of agronomic characters in the implementation of the most important directions of breeding based on optimal hybridization options and selection of valuable genotypes to improve the nutritional value and consumer qualities of potato tubers. Identification of genotypes combining a high level of starch content and yield was noted only at the level of the average population level, which coincides with the average starch content of the parents. The efficiency of selection of low-starchy forms is much higher, since a decrease in the level of manifestation of a trait has no negative correlation with productivity. A high correlation (+0.78) of the protein content in the tubers of the parental forms with the average protein content of the offspring was established, which confirms the presence of control of this trait by additively acting polygenes. The largest amount of macronutrients was found in tubers of genotypes selected among the four-species hybrids of populations from crossing wild species S.vrn ×S.adg ×S.ryb with S. tuberosum varieties. The use of the selected varieties as donors of a complex of economically useful traits makes it possible to speed up the breeding process and reduce the cost of creating new potato varieties with improved nutritional value and consumer qualities of tubers.